Universal clock.



No. 723,489. PATENTED MAR. 24, 1908 A. ROSENBUSOH.

UNIVERSAL CLOCK.

APPLICATION FILED AFR.30,1902.

N0 MODEL.

UNITED STATES PATENT OFEicE.

.ANDREVV- ROSENBUSCII, OI QUINCY, ILLINOIS.

UNIVERSAL CLOCK.

SPECIFICATION forming part of Letters Patent N; 723,489, dated. March 24, 1903.

Application filed April 30, 1902. Serial No. 105,343. (No model.)

To all whom it may concern:

Be it known that I, ANDREW ROSENBUSCH, of Quincy, in the county of Adams and State of Illinois, have invented certain new and useful Improvements in Universal Clocks, of which the following is a'specification.

This invention relates to certain new and useful improvements in universal clocks, the object being to provide a timepiece having the typical fixed dial laid off for standard time and the usual hour and minute hand, such dial having degrees of longitude laid oif thereon both for the east and west and at the inner margin of the dial marks indicative of time, together with a dial which is marked OE With twenty-four spaces, said dial turning-in an opposite direction from the hands and being connected and driven by the same movement which operates the hands, whereby the time at any place where the longitude is known can be readily ascertained without calculations by simply observing the relative position of the parts.

The invention consists in the construction and combination of the parts, as will be hereinafter set forth, and specifically pointed out in the claims. 1 In the accompanying drawings, Figure l isa front elevation of the dial of a timepiece made in accord with myinvention. Fig. 2 is a front elevation of the clock mechanism with the dials and hands removed. Fig. 3 is a side elevation showing the hands and the revoluble dial in place.

A refers to a fixed dial, which is laid ofi, as usual, to indicate the standard time, and within the numerals there is a scale of longi tude from zero to one hundred and eighty degrees both to the right and to the left, the zero mark being preferably on the righthand side of a horizontal line drawn across the dial. The dial A is cut away to provide a central space which receives a revoluble dial B, which is laid olf intwentyfour spaces,

those on one side being numbered from 1 to 12, the other side being correspondingly numbered. The outer dial A, in addition to the degrees of longitude a, is provided with a scale a, which corresponds with the scale b of the revoluble dialB. It will be observed that an annular space is provided between the degrees of longitude aand the time-scale a,

and such space may have printed or otherwise indicated-thereon the names of leading cities or places, which are spaced so as to be radially on a line with the proper degree of longitude.

The revoluble dial B has one half shaded to indicate night, and on said shaded portion the moon maybe represented. The opposite half, which is light, may have a typical representation of the sun, and this dial moves in opposition to the hands and makes one revolution in twenty-four hours from east to west to imitate the apparent motion of the sun. The time mechanism is so organized that the hands will have the usual movement of twelve hours a. m. and twelve hours'p. m. and turn in the usual direction, whereas the dial B has a rotation once in twenty-four hours.

For operating the hour and minute hands of the clock the typical mechanism for driving the hands is used, and on the sleeve 0, which carries the hour-hand, is a sleeve d, upon which is mounted thedisk B. Apinion (shown by dotted lines on Fig. 2) is mounted on the stem e, which carries the minute-hand andmeshes with a gear-wheel f, having a pinion f, in mesh witha gear-wheel g and with the gear-wheel g. The gear-wheel g has rigidly aflixed thereto the sleeve 0, which carries the thereto a pinion h, which meshes with a gearloosely over and in a reverse direction from the sleeve 0, and the gearing is so proportioned that the dial carried by the collar (1 will make a twenty-four-hour rotation, while the hour-hand makes two revolutions in the same period of time. The train of gearing which is added to the time-train reduces the motion one-half and changes the direction thereof.

The train for operating the dial B can be readily attached to clocks and time-keepers, and the dial A instead of being cut through to receive the disk B may be simply depressed, and the disk B will operate in said depressed portion.

I claim a 1. In a universal orcomparative time-clook,,

the combination with a standard dial having adjacent to its margin prominent numerals from l to 12, and within the space occuhour-hand, the gear-wheel g having affixed pied by such numerals and adjacent thereto a scale indicative of longitude, an annular space for the names of cities or places, and an inner annular scale laid OK to present a scale which is twice as to spacing that of the standard time-scale,'a revoluble dial mounted over the central portion of the fixed dial such dialpresenting adjacent to its margina time-scale which corresponds as to spacing with the inner scale of the fixed dial and shading upon one-half of the revoluble dial, of a time train or clock mechanism which operates an hour and a minute hand in the usual manner, and a reducing and reversing train in gear with the time-train and connected tothe revoluble dial to turn the same in an opposite direction from the direction of rotation of the hands and at one-half the rate of-travel as the hour-hand, substantially as shown and v :o for the purpose set forth.

dial having the usual hour figures or marks thereon, a scale of degrees within the usual hour-figures, a space occupied by the names of places which lead to a scale on the inner visible margin of the dial, of an inner revoluble dial which has an outer marginal scale of twenty-four hours such scale registering with the inner scale of the outer dial, hands driven in the usual direction over the outer dial one in twelve hours and the other once in one hour, reducinggears connected with the time-train of gears and with the inner dial to turn said inner dial in an opposite direction from the movement of the hands and- 

